Flat roofs in Minneapolis often fail at seams and drains after years of freeze-thaw cycles. EPDM rubber stretches and cracks when ice dams push water under the edge. We cut out the bad section, clean the deck, and weld in new 60-mil membrane so water runs to the scuppers again. Hennepin County requires a permit once you touch more than 100 square feet on a commercial building, and we pull those papers before we start.
Ponding water shows up every spring near the Mississippi Riverfront and in the North Loop. Modified bitumen blisters when warm humid air meets cold decking below. We open the blister, dry the insulation, and lay new cap sheet with torch-grade adhesive. Cheap crews skip the dry-out step and the roof leaks again the next rain.
How do you know if your flat roof needs more than a coating? Walk the surface after a heavy snow melt and look for soft spots or rust at the metal edges. We check slope with a laser level and measure insulation R-value so the fix meets current code. In Uptown and Cedar-Riverside row houses we often find old gravel roofs that need full tear-off before new TPO goes down.
What happens if you wait too long on a leak near Target Field or the University? Water gets into the deck and you lose the plywood or steel in one season. We carry 24/7 emergency kits with peel-and-stick patches rated for -20 degrees so we can stop active leaks the same night.
Flat Roof Repair Services We Offer
✓EPDM Flat Roof Patch
Cut out damaged rubber and weld new 60-mil sheet in place. Done same day on most Northeast and Near North jobs.
✓Emergency Flat Roof Leak Fix
24/7 response with peel-and-stick patches rated to -20 degrees. We stop active water in under two hours.
✓TPO Seam Repair
Heat-weld failed seams on commercial roofs in Downtown and Phillips. Includes new cover tape and 5-year leak warranty.
✓Drain and Scupper Clearing
Remove debris and ice from internal drains on Uptown and Longfellow buildings. Prevents ponding after spring thaw.
✓Modified Bitumen Blister Fix
Open blisters, dry wet insulation, and install new torch-down cap sheet. Common on older Camden and Southwest properties.
Flat Roof Repair Cost in Minneapolis, MN
| Service | Typical Range | What Affects It |
|---|---|---|
| Fix small flat roof leak | $450–$950 | Single patch under 50 sq ft, no deck work. |
| Repair ice dam damage on EPDM | $1,200–$2,800 | Includes new membrane and edge flashing. |
| TPO seam weld and cover tape | $600–$1,400 | Per 100 linear feet on commercial roof. |
| Full drain replacement | $950–$1,800 | New cast iron or PVC drain with flashing. |
| Free estimate | Free | On-site visit and written scope same week. |
Ranges are typical for Minneapolis, MN and confirmed with an exact written quote before any work starts.
How it works
- 1
Site Walk and Moisture Scan
We check the roof with a moisture meter and note every seam, drain, and penetration. Takes 30-60 minutes on most Minneapolis flat roofs.
- 2
Permit and Material Pull
Pull Hennepin permit if over 100 square feet. Order matching EPDM or TPO and schedule the crew.
- 3
Cut Out and Deck Repair
Remove bad membrane and wet insulation. Replace plywood or steel deck where needed. One day for most residential jobs.
- 4
New Membrane Install and Test
Weld or torch new material, seal all edges, and flood test drains. Final walk with you before we leave.
Pricing
Most flat roof repairs in Minneapolis fall between $800 and $3,500. Size, membrane type, and deck damage set the final number.